Composite material



F. WINTERBATH.

COMPOSITE MATERIAL.

APPLICATION FILED APR. 1, 1920.

1,369,151. Patente Feb. 22, 1921.

UNITED STATES PATENT OFFICE.

COMPOSITE MATERIAI..

Spetxiflcation of Letters Patent.

Pcttnted Feb. 22, 1921.

Application 'flled April 1, 1920. Serial No. 870,591.

- object to provide a simple and inexpensive material which will beimpervious to air or moisture, and which can be advantageously emplo edfor numerous purposes where a materlal having the attributes oflightness,

durability, cheapness and attractlveness are essential requisites.

In one embodiment of the present invention, which I have found to beadmirably adapted for the purpose of incrcasmg the acoustic propertiesand the ornamental appearance of the Walls of the sound amplifying bonisor chambers of meChanical sound reprodueing instruments, I provide abase or backing sheet of heavy burlap or other textile material, uponwhich a body layer of plastic material of cementitious nature isapplied. A facing sheet of muslin is then arranged upon the plasticbody, and the three layers of material are permanently secured to eachother through the medium of a suitable adhesivc. A finishing coat ofcnamel or celluloid paint is then applied to the facing sheet,preferably by spraying. This finished surface may be given a very higholish, so that it will be absolutely smootfi and unbroken. The surfacecoating of enamel or celluloid paint may be of any desired colo'r, so asto enhance the ornamental appcarance of the phonograph or other article.

My invention also contemplatesthe provi" sion of a composite material,as above characterized, which will not be dcleteriously affected bychanges in temperature, and which, therefore, will not warp*or lose itsoriginal form or shape.

With the above and otherxob jectsii'lfiza subjoined claims, referencbeing hadt"t j accompan ying drawing, wherein I have illustrated apracticalembodiment of the invention, and in which similar referencecharacters indicate corresponding parts throughout the scveral views.

In the drawings,

.F1gure 1 is a perspective view shbwing the three sheets or layers fromwhich the final manufactured product is produced, sli l 1tly separatedfrom each other.

1g. 2 15 a sectional view through the completed product. Erg. 3 is aperspective view of the product, md1cating the highly polished finishedsurface thereof, and,

Fig. 4; is a similar view showing the reverse1 or backsurface of thecomposite materia Referring in detail to the drawii1gs, 5 designates thebacksheet or layer of material which serves as a foundation for theintermediate body layer 3, of plastic cementitious matenal. The back1ngshet 5 is preferably of heavy burlap or other similar fabric, and

upon one side of the burlap the plastic bod site consistency, and isevenly spread over the backing sheet of burlap. A glue or adhesivecomposition, indicated at 7, in Fig. 2 of the drawings, is then appliedto the plastic body layer, and finally the face sheet 8, of muslin, issmoothly applied to the surface of the plastic body layer. compositioncauses the cementitious particles to be homogeneously united, and saidb9(l layer hardened and rendered perfectly 1lg1 To the opposite side ofthe burlap backing sheet 5 a water-proof adhesive composition,indicatedat.9, is also applied, said composition filling the interstices of theburlap, and uniting with the intermediate body lager 6.. In thls mannerthere is produced W at .is prtctically a continuous one-piece rigidstructure.

In accordance with the particular purpose for which the compositionmaterial is to be used, the facing sheet of muslin ma b coated withvarious prparations.

coat of ena'mel or foimly distributed over such surface, pref erablybysprayin the paint. This surface is finally rubbed own and highlypolished.

The material thus finished may be advan tageously utilized in theconstruction of the The glue layer 6 is disposed. This body layer is pieerably of plaster composition of the requi-- 'hus .after applying asizing coat to the musli1i face sheet, a finishih celluloid paint, as inicatecl at 10, is uniwalls 'ofrsoud' simplifyin I chambers or horns,such as are pr0v1de souxid reproducin instruments. It has been foundthat the lnghly fixiished' and glazed surface material enhances thevolume of sound and the quality of the tone of the inf -strument, and inview of the fact that the composite material, is.absolutly 1mpervious tomoisture, it will not crack, warp or Other shape or condition.

- color, thmartistic appearance of t e instru- 'ment Will be greatl-'i'ncreased, and the selected color may harmOnize with the color schemeof the other appomtmentsof the room 01' apartment 1n-wh1ch theinstrument is placed, It is obvious that in the above particulars theimproved composition material is superior to wood or metal he1etoforcutilized in the constructionof such instruments- I have above referredto one of the more important uses to which the improved compositionmaterial may be apphed,.but nu-* mer0uSother purposes for whichthematerial might be sidvantageously employed will readily su'ggestthemselves. Thus I have found that such material when used in theconstruction of the bodies and limbe of dolls is far superior to the useof vood or plastic xceedingly strong, rigid and durable, and

Will not break, crack or chip, should the doll be abused or roughlyhandled.

In addition to the afibove, my improved composition material may also-be utilized as a wall board in the construction of walls andpartitions, it, of course, being understood that in such case the bodylayer of plaster composition Will be of the requisite thickness, and theburla backing sheet sufficiently heavy to a 0rd. the necessary strengthand rigidity in the wall structure. F urthermore, the material can alsobe serviceably used as a veneer sheet for various mnufactured articlesof wood, as it Will take and retain a very high polish on its exposedsurface.

Again, the present invention may be uti lized by artists as a substitutefor the customary canvas board with marked advantages owing to the factthat the composition material is non-absorbent and impervious inmechanical l urthermore, as the. material may 'be finished in andesired' to moisturef Its finished surface will, therefore,readily hold'the applied paint, and the poss1bilityrof crackin of the paint by thewarping of the board 1s obviated.

From the foregoing description considered in coimection with the.accompaning drawing, the construction and seVeril advantages of myimproved composition materil will be fully understood. wise .becomedeformed from its original I hve .herein given several examplesof practical 'applicat1oHs of the new material, ut 1t 1s, 0 course, apparentthat this material may likewise be .adapted to numerous other uses, andin such applications it maybe nessary to slightly change the compo'sition of the several superposedlaminations. const1tut1ng the completedproduct. Ac-

cordinglyl reserve the'privilege of adopting all suchlegitimatemodifications as may be fairly embodied. within the spirit and scope ofthe invention'as claLimed. v

I claim:

l. A laminated composite material consisting of a relatively heavytextilegbacking sheet, a body layerx0f plastic material apphed to oneside of said backing sheet, a facing sheet of .relatively fine textilematerial covering said plastic layer, and an adhesive permanently unitinthe several superposed layers of materi to each other.

2. A laminated composite material consisting of a relatively heavytextile backing sheet, abody layer of plastic material applied to oneside of said backing sheet, a

' facing sheet of relatively fine textile material covering said plasticlayer, an adhesive permanently uniting the several superposed laers ofmaterial to each other, and a composition finishing coat applied to saidsurface sheet, and capable of redeiving and retaining a highly polishedsurface.

3. A laminated composite inaterialconsisting of a relatively heavytextile backing sheet, a body layer of plastic material applied to oneside of said backing sheet, a facing sheet of relatively fine textilematerial covering said plastic layer, an adhesive permanently 1initingthe several superposed lay'ers of material to each other, a waterproofadhesive composition on said textile backing sheet, and a compositionfinishing coat applied to said surface sheet, and capable of receivingand retaining a highly polished surface.

In --testimony that"I claim the foregoing as my invention, I have sighedmy name in presence of two subscribing witnesses.

l FRANK WINTERBATH. Witnesses:

VIOLA C; OLVAN, HENRY'W. CRONN.

